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直升机座舱一般不密封,其内部微小气候直接受外界环境的影响波动较大,会使机组人员遇到各种不同温度的冷热负荷。我国南方处于热带和亚热带气候,常年平均气温高,日照时间长。夏季停放在地面的飞机座舱温度高达56℃;此外座舱的温度还受太阳辐射的影响,阳光通过舱盖大面积的透明有机玻璃直射到座舱内,可产生温室效应;随着各种机载设备的增加,电子设备工作时产生的大量热能也
Helicopter cockpit is generally not sealed, its internal micro-climate directly under the influence of the external environment, large fluctuations, will enable the crew encountered a variety of different temperature cooling load. The southern part of our country is in a tropical and sub-tropical climate with a high annual average temperature and long sunshine duration. In summer, the temperature of the cockpit parked on the ground is as high as 56 ° C. In addition, the temperature of the cockpit is also affected by the radiation of the sun. The sun shines directly into the cockpit through the large area of the transparent plexiglass cover and can cause the greenhouse effect. With various airborne equipment The increase in the amount of heat generated by electronic equipment also works